package com.sky.controller.admin;

import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishOverViewVO;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.CachePut;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Set;

/**
 * @author zh
 * @date 2024-04-28 21:11
 * 菜品管理
 */
@Slf4j
@RestController
@RequestMapping("/admin/dish")
@Api(tags = "菜品相关接口")
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private RedisTemplate redisTemplate;

    @PostMapping
    @ApiOperation("新增菜品")
    //@CachePut(cacheNames = "dishCache", key = "#dishDtc.id") //如果使用Spring Cache缓存数据，key 的生成: dishCache::1
    //@CachePut(cacheNames = "dishCache", key = "#result.id")
    //@CachePut(cacheNames = "dishCache", key = "#p0.id")
    //@CachePut(cacheNames = "dishCache", key = "#a0.id")
    //@CachePut(cacheNames = "dishCache", key = "#root.args[0].id")
    public Result save(@RequestBody DishDTO dishDTO){
        log.info("新增菜品：{}", dishDTO);
        dishService.saveWithFlavor(dishDTO);

        // 清理缓存数据【数据一致性】
        String key = "dish_" + dishDTO.getCategoryId();
        cleanCache(key);

        return Result.success();
    }

    /**
     * 菜品分页查询
     * @param dishPageQueryDTO
     * @return
     */
    @GetMapping("/page")
    @ApiOperation("菜品分页")
    public Result<PageResult> page(DishPageQueryDTO dishPageQueryDTO){
        log.info("菜品分页：{}", dishPageQueryDTO);
        PageResult pageResult = dishService.pageQuery(dishPageQueryDTO);
        return Result.success(pageResult);
    }
    /**
     * 菜品的批量删除
     * @param ids
     * @return
     */
    @DeleteMapping
    @ApiOperation("菜品的批量删除")
    //@CacheEvict(value = "dishCache", key = "#ids") // 清理某一条数据
    //@CacheEvict(value = "dishCache", allEntries = true) // 清理key的所有数据
    public Result delete(@RequestParam List<Long> ids){
        log.info("菜品的批量删除:{}",ids);
        dishService.deleteBatch(ids);
        // 清理缓存数据【数据一致性】,
        // 将所有的菜品缓存数据清理掉，所有以dish_ 开头的key
        cleanCache("dish_*");
        return Result.success();
    }

    /**
     * 根据菜品id查询菜品
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    @ApiOperation("根据菜品id查询菜品")
    //@Cacheable(cacheNames = "dishCache", key = "#id")
    public Result<DishVO> getById(@PathVariable Long id){
        log.info("根据菜品id查询菜品:{}",id);
        DishVO dishVO = dishService.getByIdWithFlavor(id);
        return Result.success(dishVO);
    }

    /**
     * 修改菜品
     * @param dishDTO
     * @return
     */
    @PutMapping
    @ApiOperation("修改菜品")
    public Result update(@RequestBody DishDTO dishDTO){
        log.info("修改菜品：{}", dishDTO);
        dishService.updateDishWithFlavor(dishDTO);

        // 清理缓存数据【数据一致性】,
        // 将所有的菜品缓存数据清理掉，所有以dish_ 开头的key

        cleanCache("dish_*");

        return Result.success();
    }

    /**
     * 根据分类id查询菜品
     * @param categoryId
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<Dish>> list(Long categoryId){
        List<Dish> list = dishService.list(categoryId);
        return Result.success(list);
    }

    /**
     * 清理缓存数据【数据一致性】,
     * 将所有的菜品缓存数据清理掉，所有以dish_开头的key
     * @param pattern
     */
    private void cleanCache(String pattern){
        Set keys = redisTemplate.keys(pattern);
        // 将缓存中的菜品数据全部清理，下次用户访问就更新数据
        redisTemplate.delete(keys);
    }

}
